Fastening of hose-pipes to pipe ends.



PATENTED APR. 30, 1907.

G. NIELSEN. FASTBNING OP HOSE PIPES T0 PIPE ENDS.

`- No.A 852,237.

PPLIOATION FILED 00T.5. 1905.

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No. 852,237. PATENTED APR. 30, 1907.

G. NIELSEN. FASTENING 0F HOSE PIPES T0 PIPE ENDS.

APPLICATION FILED 00T. 5. 1906.

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land of t UNITED STATES .PATENT onirica.

FASTENING OF HOSE-PIPES TO PIPE ENDS. l I

Specilcation of Letters Patent.

Patented April 80, 1907.

Application tiled October 5,1905. Serial No. 281,480.

' To a/ZZ whom, it may concern;

Be it known that I, CARL NIELSEN, manu- 5 gen, Oerstedsvcj 20," in the Kingdomof Denmark, have linvented certain new and useful Improvements in' and Connected with the Fastening of Hose-Pipes to Pipe Ends, of which the following is a full, clear, and exac This invention has reference to the`mode of and a pliances for fastening hose pipes to pipe en s; and in accomplishingl the object urpose of the-invention, t e elasticity fie india-rubber, of which the hose is made, is adapted and utilized to produce a good attachment between the hose and pipe ends, and one that will resist great pressure, and make a perfect joint.

The attachment of the hose pi e to aY ipe end is eected by ushing the en of the fiese over the pipe en which is cone-shaped, in the usual manner,-so that the longitudinal pressure toward the increasing diameter of -z 5 the conical portion of the pipe end, will tend to heap up or thicken the hose immediately in front of the sleeve. This thickening of the after part of the hose end, which serves for securing same, prevents the hose end from .3o receding into the space between the outer surface of the pipe end and the inner surface of the sleeve, and thereby renders considerably more diiiicult, the tearing-off of the hose from the pipe end, even in the case'of greatly 3 5 increased pressure.

Experiments have shown thatin ulling at a hose fastened in this manner, the ose itself would sooner come to pieces, than the hose end coming away from the pipe end where- 40 as, if that thickening is not produced, the

end of the hose-in case of the latter being dragged--will slipout of the space between the cone-shaped pi e end and the correspondingly shaped s eeve, and the hose.end

will be pulled off the pipe end.

yFor receiving the thickened hose end, there must of course be suflicient space, that is to say, a recess, behind the end of the sleeve,

and such recess may, for instance, be pro- 5o duced by turning a groove round the pipe end.

In case of non-elastic material, for instance a pi e of soft metal, being used, in the place of tllf e e hose, it would not possible to carry I 5 5 out the invention. For, even though at first,

a thickening of the soft metal pipe should result would-in case of heightened pressure, and in consequence of the absence of elasticity-be either the tearing off at the point where the thickened part adjoins the eX- tended portion, or else thestretching of the thickened portion. ening would not prevent the receding of the end of the soft metal pipe into'the space between the outer surface of the cone-shaped ptipe end and the inner surface of the sleeve.

- on the other hand, when using an elastic hose, it Were attempted t produce the thickening of the hose end, not by the lon itudinal' displacement of a sleeve, but by t e turning of the latter, this would produce an irregular stretching and dragging of the hose end, whereby the resistance of the hose would be weakened, so that, in case of the pressure being increased, it would more easily tear at tightly by means of the longitudinal displacementl of a sleeve.y y In the following description, the inventio in the accompanying drawings.

Over the cone-shaped part g (see Figures 1 and'2) of the pipe end a, the end c ofthe elastic hose is pushed so far, that the hose enters the chamfer of groove k. Thereupon a sleeve Z possessing an inner surface of correspondingly cone-shaped form, is pushed over t e'hose end. This sleeve, in the case shown Cin Figs. '1 and 2,-where` Fig. 2 represents a section at X---X of Fig. 1--, consists of two separate parts Z and n, of which the inner part, Z, possesses the cone-shaped inner surface, Whereas the outer part n of the sleeve, which is at one part providedwith a female screw thread, is turned in at right angles at its upper end, at o. The surface thereby createdwhen the part it is screwed onto thel tube end-presses upon the end face m of the inner part Z, and in this manner effects the lonitudinal displacement of this inner part Z.

y means of this longitudinal displacement, that part of the hose which lies between the cone-shaped end g of pipe aI Vand the coneevenly stretched, and, in consequence, thickened correspondingly at the spot lying behind the sleeve Z, that is to say, at the art lying within the groove 7c. By this, the ose end is prevented from receding into the space between -tlie outer'surface of the pipe end g and the inner surface ofsleeve Z in case take place behind the end of the sleeve, the

In any case, the thick-- .is described with the. aid of examples shown shaped inner surface of part Z,v is being the dragged places, than a hose pressed of anincrease of pressure, and hence the hose is secured against being pulled H. It willbe observed f -reference tothe l drawings that theannular recess or groove 7c `presents an inclined surface over which the 'end of the hose is forced Aby the movements of the compres'sin member Z, and that the depth and breadt of the said annular recess is such that the same becomes only partially filled by said thickened and heapedup end of the hose and the said end is preserved from injury.

Inthe'case of the mode of carrying out the invention represented in Figs.- 3 to 5, the sleeve pushed over the hose, and having a cone-shaped inner surface h, consists of one piece only, andthe fastening of this sleeve to the pipe end a, in the case of Fig. 3A and Figs. 4 is'eiiected by means of a bayonet joint fastening, and in the'case of Fig. 3B

' and Fig. 5, by the sprin action of the slit end a.

sleeve, and the placing 'o' the bulge e in the correspondingly shaped groove f of the pipe In this connection, Fig. 4 represents an elevation of the coupling shown in'section at A of Fig. 3; and Fig. 5 is an 'elevation' of the coupling shownin'section at B, of Fig. 3.

In the caselof the mode of carrying out the y invention sholwn in Fig. 6, the pipe end a 1s like parts is provided with a correspondingl female screwthread. When the hose- A is fastened on the cone-shaped end g of the pipe a, the .sleeve ln-after the part Z has been vpushed on-is pushed over the pipe end inl such a manner that the thickened partsg slide along in .the sunk grooves p. Thereupon, as soon as the sleeve n has been pushed as far as possible over the pipe end, and the hose -end has been sufficiently thickened at cby the simultaneous longitudinal displacement of part Z, a simple turn of sleeve 'n/ engages the female screw-thread' on the` thickened parts g-with the male screwthread of the pipe end a, and by this, the

sleeve is secured in its position.

' In the case of the mode of carrying out the invention shown in Fig. 7, the screw-thread is replaced by one single rising worm, in

such a manner that on the pipe end a, a ring 1' is arranged, which is interrupted at two laces p lying opposite each other, the two iialves of which ring on their after-side, s, rise from the cut away places toward the middle. The sleeve h', which in this case consists 0f one part only, on/itsfafter part is 'bent inward like a flange at two places lying opposite lnach other,.s that at those placs 5 projections t are rformed, which-after the sleeve h hasbeen pushed over the hose end-enter through the passages p@ and then, u on the sleeve-h being turned, are ableI toncatc behind the rising faces s of the half effected by means of direct wedge action.

This pressing of the hoseon the pipe end may however also be effected by means of indi- .rect wedge action, in which case, one or more levers, a bent piece of wire, a snap spring, or some other means may suitably be inserted as an intermediate member between the outside sleeve, or the ring, and the` pipe end. Those intermediate members then have the eiiect of the wedge action-by means of which the hose is pressed firmly on the pipe endbeing produced in an indirect manner. A form of ca 'ng thisout, serving as an eX- ample of suc an arrangement1 is represented in Figs. 8 and 9, which are a side view andl plan, respectively. jointed onto the sleeve hn a fork u, which terminates in an arm fv. l

On'the ipe end, w of a cylindrical or semicylin rical form,l are arranged at twoV points opposite each other.

Correspondinglyformed steps :r on the fork y, are adapted to catch behind these pins w, afterthe sleeve h has been pushed sufficiently far over the hose end and the pipe end. The engagement is then effected simply by. depressing the fork u, with the steps x, by pressure-upon the arm fu.

The form of construction described may be. lmodified in such a way that the fork'uJ andv the arm v are replaced by two arms, which act at opposite sides of the sleeve hn. pins w may be replaced by a ring encircling the pi e end, that side of the ring whichis turned) toward the projections :cis shaped-accordingly. In those cases, where the leverage required isY not great, the

I'GSSUIG may In the cases fthe modes of carrying out In this case, there is IOO- The

IlO

be effected partly by hand b pushing the sleeve 71,11 along, and the lever and the like may then be replaced by a loose catchl or the like, which is attached to the'sleeve h, and

is'pushed over the pin, ring, or the like,"of the pipe end a, or inserted in a groove of the pipe end. p The lever may be stretched over a snap spring, or .a sna ployed as an 'interme iate member between the sleeve huand the lever. Instead of ats'pring may be em- IZO taching the fork u with the handle fu, and the projections to the sleeve h, it may, in the reverse mannerbe attached to the pipe end .6b. It is plainit is unnecessary to describe and represent all possible forms of carrying out the invention, as regards the various known means, by which the indirect wedge action may be produced. The constructions is possible to attain, also by indirect wedge action, simultaneously, an attachment, a.

joint that is resistant to pressureand firm,

and a saving of wear and tear to the material of the hose.

All the modes of carrying out the invention last described are examples of a suitable rapid fastening effected by4 means of wedee pressure. For instance, in the case of coo ing gas, fire brigade water main, 'and other hose pipeswhere frequent changes or quick fastenings are requisite, the form of carrying out according to Fig. l is most suitable, especially for reliable attachments and lfastenings of hose pipes which have to stand a considerable internal ressure.

By some of the iitherto known modes of attachment for attaching hose pipes to pipe ends, it has not been possible to push the hose closely enough onto the pipe end, so that a reliable attachment was not guaranteed, even when an india-rubber ring or the like was pushed over the place of attachment. The points'of attachment present an absence of tight closing, which, especially in the case of joining gas pipes, may have very detrimental effects, seeing that, by the escaping gas, explosions of gas and fires may be caused. In the case of some other hitherto known modes-ofl attachment, the winding -round of wire has been employed. l Apart from the fact that such wire windings take up much time for their application, and destroy the ends of the hose pipes, they also possess the disadvantage, that they cannot be made by everybody, and they render it very difficult to detach the hose againfrom the pipe end. lEven in cases where a screw ljoint is employed for attaching the hose to the pipe end, it is necessary to wind wire round, and only then has it been possible to insert, be-

' tween the nut of the screw joint and the pipe end, the packing for tightly closing the place of joining. I t is self-evident that such packings will not keeptight permanently in the course of time the' are very much worn, and rendered useless, y the repeated turning of the nut of the screw joint. All these defects are remedied by means of the modes of attachin and-the attachment appliances, describe The attachment can be effectedby anybod with ease and rapidity. The material ofy the hose is affecte as little as possible, the tight closing becomes reliable, and the attachment becomes such, that, as has been shown by repeated experiments, the

- hose itself will break before the hose end will come away from the .pipe end. It is, moreover, important that the attachment appliances should be of very simple construction,

and applicable for all purposes. The constructions may be manufactured in a simple and cheap manner, as the com onents of the appliances may be produced hy machinery in large quantities, and kept in stock of standard sizes for the current diameters of hose and pipes.

Having thus particularly described this my invention, I declare that what. I claim and desire to secure by United States Letters Patent is:

1. In ahose coupling, the combination of a member having a .conical end, a hose on the conical end of said member, a member having a tapered bore through which the hose end extends, Said member movable longitudinallyy to .compress the hose between said sleeve and the conical end of said first-mentioned member, said first-mentioned member having an annular recess at the base of said conical portion resenting an inclined surface over which t e end of the hose is forced and becomes thickened and heaped up, the depth and breadth of the said annular recess being such that the same becomes only Vpartially filled by said thickened and heapedup end of the hose and the latter is preserved from injury.

2. In a hose coupling the combination of a member having a conical end of reduced diameter, an annular recess at the base of said conical end, and external screw threads in rear of said recess, a hose on the conical end of said member, a sleeve member having a tapered bore through which the hose end extends, and an outer sleeve member engaging the outer end of the first-mentioned sleeve member and having its inner end internally screw-threaded t'o engage the first-mentioned member and move the first-mentioned sleeve member inwardly on the hose and force the end of the hose into, and cause thesame to become thickened and heaped-up in,'the said annular recess, the width and depth of such recess being such that the same becomes only partially filled with said heapedup end of the hose and said end of the hose is preserved from coming in contact with and being-injured b the screw threads.

3. In a, hose coup ing, the combination of a member having a conical end of reduced diameter, an annular recess at the base of said conical end, external screw threads in rear of said recess and longitudinal passagesA to become thickened and heaped-up in, the

said annular recess, the Width and depth of IOO such recess be' such that .the same becomes only partially led with said heaped-up end of the hose and said end of the h ose is prevented from coming in contact with and being injured by the screw threads.

4. In a hose coupling, the combinationrof a. member having a comca1 end and an annularrecess at the base of said conical ortion presenting an inclined surface atsuc base, a hose on the conical end of such member, and means to move' the hose longitudinally on the conical portion of the first-mentioned member and compress the hose on such conical portion, so that the end of-the hose is forced over the inclined surface of such annular recess and becomes thickened and heaped-u in such annular recess, the depth and brea 'th of the said annular recess being such that the same becomes Vonly artially filled by such thickened and heape -up end 2o CARL NELSEN. Witnesses WM. ANDERSON,

ALBERT G. MICHELSON. 

